Well said PDA. This is something that I've been pointing out to people for some years.
Of course, that's not to take away from either Powell's reputation, nor the quality of their work, but there is so much more available out there - much of which is still not researched and largely overlooked by most collectors. Some of it IS known and collected, but undervalued for its origin and quality.
I believe there is still a long way to go within collecting of British glass, in particular (which is, of course, my major subject area), and, not to suggest the rest of the world would be thoughtless - throughout the 20th century.
Happy hunting everyone, there's still a lot of fun to be had out there!!